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CVE-2019-6833

MEDIUMCVSS 6.5/10EPSS 1.05%

Last modified

CVE-2019-6833 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. A CWE-754 – Improper Check for Unusual or Exceptional Conditions vulnerability exists in Magelis HMI Panels (all versions of - HMIGTO, HMISTO, XBTGH, HMIGTU, HMIGTUX, HMISCU, HMISTU, XBTGT, XBTGT, HMIGXO, HMIGXU), which could cause a temporary freeze of the HMI when a high rate of frames is received. When the attack stops, the buffered commands are processed by the HMI panel.. EPSS estimates a 1.05% chance of exploitation in the next 30 days.

Description

A CWE-754 – Improper Check for Unusual or Exceptional Conditions vulnerability exists in Magelis HMI Panels (all versions of - HMIGTO, HMISTO, XBTGH, HMIGTU, HMIGTUX, HMISCU, HMISTU, XBTGT, XBTGT, HMIGXO, HMIGXU), which could cause a temporary freeze of the HMI when a high rate of frames is received. When the attack stops, the buffered commands are processed by the HMI panel.

Metrics

CVSS 3.1
6.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS Probability
1.05%

59.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Schneider-ElectricHmigto FirmwareAll versions
Schneider-ElectricHmisto FirmwareAll versions
Schneider-ElectricXbtgh FirmwareAll versions
Schneider-ElectricHmigtu FirmwareAll versions
Schneider-ElectricHmiscu FirmwareAll versions
Schneider-ElectricHmistu FirmwareAll versions
Schneider-ElectricXbtgt FirmwareAll versions
Schneider-ElectricHmigxo FirmwareAll versions
Schneider-ElectricHmigxu FirmwareAll versions

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-6833?
A CWE-754 – Improper Check for Unusual or Exceptional Conditions vulnerability exists in Magelis HMI Panels (all versions of - HMIGTO, HMISTO, XBTGH, HMIGTU, HMIGTUX, HMISCU, HMISTU, XBTGT, XBTGT, HMIGXO, HMIGXU), which could cause a temporary freeze of the HMI when a high rate of frames is received. When the attack stops, the buffered commands are processed by the HMI panel.
How severe is CVE-2019-6833?
CVE-2019-6833 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.05% probability of exploitation in the next 30 days.
How do I fix CVE-2019-6833?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-6833?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST